521834 divided by 20 
The aim is to understand the frequency of 20 in 521834.

Moving on to step 1:
20 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 20

Let's proceed to step 2:
When dividing 52 by 20, we get 2 with a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 40 from 52 to get 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 20

Going ahead to step 3:
20 can be fit into 121 6 times, resulting in a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 26.0
If we subtract 120 from 121, we get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 20

Advancing to step 4:
18 divided by 20 is 0 with a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 260.0
Deduct 0 from 18 and we're left with 18.
Fetch the next digit (3) from the dividend, attach it to 18 and continue: 183 / 20

On to step 5:
If we divide 183 by 20, we get 9 and a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 2609.0
Subtract 180 from 183 to get 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 20

Step 6:
If we divide 34 by 20, we get 1 and a remainder of 14.
The next digit of our result is 1. 
Result so far: 26091.0
If we subtract 20 from 34, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
20 can be fit into 140 7 times, resulting in a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 26091.7
Subtracting 140 from 140 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 26091.7
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 26091.7
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 26091.7, and the remainder is 0.0.